B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
164/29
B29C 65/08 (2006.01) B26D 7/08 (2006.01) B26F 1/10 (2006.01) B26F 1/24 (2006.01)
Patent
CA 1253431
ABSTRACT OF THE INVENTION The invention is for a system and method of ultrasonically perforating a continuously moving strip of material in a matrix pattern. The system comprises a knurled rotating drum having sharp, perforating projections over which the strip to be perfo- rated is caused to pass. A sonic horn positioned over the strip forces the strip into perforating contact with the drum, rapidly.
523297
Mobasser Youn
Wallerstein Lawrence B.
American White Cross Laboratories Inc.
F.a. Products L.p.
Moffat & Co.
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